Collet Size Collet Size |
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Grip Range Grip Range |
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Collet Type Collet Type |
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 | ER-20 |
For Holding For Holding |
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Face Type Face Type |
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 | Round |
Overall Length Overall Length |
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Maximum Body Diameter Maximum Body Diameter |
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Approximate Diameter Compression Approximate DiameterCompression |
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For Use With For Use With |
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Material Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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ER-20 Collets
Collet
Collet with Coolant
Install into an ER-20 collet chuck or holder to tightly grip round-shank tool bits in milling machines. To ensure they work with milling machines and tooling made throughout the world, these collets meet both ISO and DIN dimensional standards.
Collets with coolant keep tools cool to extend tool life.
For technical drawings and 3-D models, click on a part number.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Features | Max. Coolant Pressure, psi | Specifications Met | Each | |
Round | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/16" | 0.047"-0.063" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 000000 |
| 3/32" | 0.078"-0.094" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 5/32" | 0.125"-0.156" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 3/16" | 0.156"-0.187" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 3/16" | 0.183"-0.187" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | Coolant | 1,000 | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 7/32" | 0.187"-0.219" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 1/4" | 0.219"-0.250" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 1/4" | 0.234"-0.250" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | Coolant | 1,000 | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 9/32" | 0.250"-0.281" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 5/16" | 0.281"-0.312" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 11/32" | 0.312"-0.344" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 3/8" | 0.344"-0.375" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 3/8" | 0.359"-0.375" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | Coolant | 1,000 | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 13/32" | 0.375"-0.406" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 7/16" | 0.406"-0.437" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 15/32" | 0.437"-0.469" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 1/2" | 0.469"-0.500" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 1/2" | 0.484"-0.500" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | Coolant | 1,000 | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 3mm | 2.5 mm-3 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 4mm | 3.5 mm-4 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 5mm | 4 mm-5 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 6mm | 5 mm-6 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 000000 | 00000 |
| 7mm | 6 mm-7 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 8mm | 7 mm-8 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 10mm | 9 mm-10 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |
| 12mm | 11 mm-12 mm | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | __ | __ | DIN 6499, ISO 15488B | 0000000 | 00000 |